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From fundamentals to advanced topics like closures, prototypes and the event loop — the reference free JavaScript book, kept current.
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The official Rust book: ownership, borrowing, traits and fearless concurrency, free online with runnable examples.
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The complete Git reference book, free online, with a maintained French translation — from first commit to plumbing internals.
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The official guide to TypeScript's type system, from everyday types to generics and declaration files.
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Google's course collection on modern web development: CSS, accessibility, performance, forms and PWA, written by platform experts.
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OWASP Cheat Sheet Series
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